Question

which expression is equivalent to the value 64,000?    A.   6.4 x 10²    B.   6.4 x 10³   C.  6.4 x 10⁴   D.  6.4 x 10⁵

Answer 1

C. 6.4 x 10⁴

Explanation:

To write this number in scientific notation, we must move the decimal behind the first non-zero digit in the number. That digit is 6; this makes the decimal portion 6.4.

We must count the number of places we move the decimal. To move it from the end of the number to the decimal is a move of 4 spaces; this makes the correct answer

6.4 x 10⁴.

Answer 2

the answer is c

hope it helps